Variable: gnus-permanently-visible-groups
gnus-permanently-visible-groups is a customizable variable defined in
gnus-group.el.gz.
Value
nil
Documentation
Regexp to match groups that should always be listed in the group buffer.
This means that they will still be listed even when there are no unread articles in the groups.
If nil, no groups are permanently visible.
Probably introduced at or before Emacs version 19.32.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-group.el.gz
(defcustom gnus-permanently-visible-groups nil
"Regexp to match groups that should always be listed in the group buffer.
This means that they will still be listed even when there are no
unread articles in the groups.
If nil, no groups are permanently visible."
:group 'gnus-group-listing
:type '(choice regexp (const nil)))